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From: Grant Likely <grant.likely@secretlab.ca>
To: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Cc: linux-kernel@vger.kernel.org,
	alexander.stein@systec-electronic.com, qi.wang@intel.com,
	yong.y.wang@intel.com, joel.clark@intel.com,
	kok.howg.ewe@intel.com, toshiharu-linux@dsn.okisemi.com,
	tglx@linutronix.de
Subject: Re: [PATCH v4] pch_gpio: Support interrupt function
Date: Fri, 15 Jul 2011 14:14:14 -0600	[thread overview]
Message-ID: <20110715201414.GK2833@ponder.secretlab.ca> (raw)
In-Reply-To: <4E1AB3F7.2070600@dsn.okisemi.com>

On Mon, Jul 11, 2011 at 05:27:35PM +0900, Tomoya MORINAGA wrote:
> Hi Grant,
> 
> (2011/07/05 14:52), Tomoya MORINAGA wrote:
> >(2011/07/05 12:59), Grant Likely wrote:
> >>>As we discussed before,
> >>>without specifying PCH_IRQ_BASE,
> >>>it seemed IRQ number collision issue occurred.
> >>>Thus, I added PCH_IRQ_BASE.
> >>
> >>Then fix the irq collision. If the core code hands out an irq range
> >>that is in-use by some other driver, then the other driver isn't
> >>reserving it's irqs correctly and it needs to be fixed. Hacking
> >>around the problem doesn't help anything in the long run.
> >>
> >
> >I tried to work irq_alloc_descs with dynamic allocation.(Set 2nd
> >parameter as 0).
> >However it seems the issue remains to be seen.
> >I attached dmesg output log, /proc/interrupts log and modified PCH-GPIO
> >source code.
> >
> >Could you give me your opinion or information ?
> >
> >NOTE: I tested on linux-3.0-rc3
> >
> How is it going ?

Sounds like the platform is not correctly reserving the irq descs it
is using.  You'll need to dig into the irq desc allocation code to
debug it.

g.


  reply	other threads:[~2011-07-15 20:14 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-01  2:16 [PATCH v4] pch_gpio: Support interrupt function Tomoya MORINAGA
2011-07-04 16:31 ` Grant Likely
2011-07-05  3:52   ` Tomoya MORINAGA
2011-07-05  3:59     ` Grant Likely
2011-07-05  5:52       ` Tomoya MORINAGA
2011-07-11  8:27         ` Tomoya MORINAGA
2011-07-15 20:14           ` Grant Likely [this message]
2011-07-19  8:02             ` Tomoya MORINAGA

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